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Journal of Shanghai University >

2020 , Vol. 26 >Issue 6: 945 - 953

DOI: https://doi.org/10.12066/j.issn.1007-2861.2109

Research Articles

Enhancement of SnO2/g-C3N4 dual two-dimensional materials for formaldehyde gas sensing

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  • College of Sciences, Shanghai University, Shanghai 200444, China

Received date: 2018-08-14

  Online published: 2020-12-29

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Abstract

The ultrathin two-dimensional  SnO2 nanosheet was synthesized by a solvothermal method, and  g-C3N4  with grapheme-like structure was obtained by chemical vapor deposition of high-temperature pyrolytic urea. Both materials were then mixed by grinding, sonication, and drying to fabricate  SnO2/g-C3N4 . X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were used to characterize the compositions, morphology, and structures of  SnO2/g-C3N4 . The results showed that the  SnO2/g-C3N4 nanosheets were distributed evenly on the  g-C3N4  support and  SnO2/g-C3N4  materials have higher sensitivity, better selectivity, and faster response than pure  SnO2 for the detection of formaldehyde vapor. The synthetic approach provides a simple and effective strategy for improving the performance of gas-sensing materials and may find application in formaldehyde detection in indoor environments.

Key words： ;  SnO2;  g-C3N4 ; two-dimensional nanomaterials; gas sensing property; formaldehyde detection

Cite this article

ZHANG Wenshuang, YUAN Tongwei, ZHANG Dan, MA Zhiheng, CHENG Zhixuan, XU Jiaqiang . Enhancement of SnO2/g-C3N4 dual two-dimensional materials for formaldehyde gas sensing[J]. Journal of Shanghai University, 2020 , 26(6) : 945 -953 . DOI: 10.12066/j.issn.1007-2861.2109

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